An unusual case of gastritis in an infant - AGPSagps.org.au/resources/AGM_Stuff/2016_AGM_presentations/Sarcina... · Sarcina organisms •First documented in 1842 in the stomach contents

An unusual case of gastritis in an infant

Disna Abeysuriya

PathWest

Princess Margaret Hospital

Acknowledgements

• Dr Kunal Thacker – Paediatric gastroenterologist

• Dr Gareth Jevon – Paediatric pathologist

Hx

• Baby AF, 10 month old Australian aboriginal girl presented to ED with billious vomiting for 2 days.

• No other illness.

Ex

• Lethargic and dehydrated requiring fluid resuscitation

• Blood stained nasogastric aspirates

Ix

• Mildly low Hb 141 g/l

• X ray abdomen – grossly distended stomach with intramural gas and pneumatoperitoneum.

Suggestive of emphysematous gastritis

Mx

• Laparotomy – confirmed pneumatosis of the stomach wall and lesser omentum.

• There was no peritoneal free air or contamination.

• Intraoperative gastroscopy – severe diffuse gastritis with sloughing of mucosa and ulceration.

• Duodenum was distended and could not be traversed beyond the level of ampulla of Vater.

• Duodenal web found at D4 and was resected.

Histology

• Duodenal web

• Biopsies from Oesophagus, gastric antrum and duodenum

• DDx - micrococcus

Sarcina organisms

• First documented in 1842 in the stomach contents of a patient with pain, bloating and vomiting

• Sarcina ventriculi

• Nearly spherical cells 1.8-3 micrometres

• Distinct packeted morphology - tetrad or octad (8-10 micrometres)

• Gram positive cocci

• Non motile, acid tolerant bacteria - can live in low pH environment of stomach

• Organism on the luminal mucosal surface without direct invasion or reaction of the epithelium

• Obligate anaerobe

• Sole energy source is fermentative metabolism of carbohydrate, produces CO2 as a by product

• Ubiquitous and found in soil and air

• Found in livestock and faeces of vegetarians

• Innocent bystander in healthy humans unless in the setting of gastro paresis or gastric outlet obstruction when it overgrows in stagnant food debris.

• Only 9 cases of human infection are reported in literature

• Ages 12-73yrs

• All cases had retained food in the stomach due to anatomic or physiologic delay in emptying the stomach

• Bariatric surgery, small bowel resection, pancreaticoduodenectomy, gastric pull through for oesophageal atresia, tumour/mass, diabetic gastroparesis, obesity and metabolic syndrome

• Complications – frothy vomiting, abdominal pain and distension, iron deficiency anaemia, gastric ulcer, emphysematous gastritis and gastric perforation

Management

• Commensal in patients with poor gastric emptying – No drug treatment. Identify the cause

• Prominent dysphagia or pain – PPI and prokinetic Rx

• Sarcina seen in an ulcer or eroded stomach – Gentamycin, metronidazole or ciprofloxacin to eradicate

• Confirm eradication with repeat endoscopy 3-6 months

• Baby AF recovered well from surgery.

• Emphysematous changes disappeared within a few hours.

• Discharged with PPIs

• Repeat endoscopy 7-8 weeks later – complete macroscopic and histological resolution.

• This is the only reported documented case of Sarcina in an infant.

References • Sarcina ventricularis complicating a patient status

post vertical banded gastroplasty: A case report. Journal of gastroenterology and hepatology research. 2015;4(2)

• Sarcina ventriculi of stomach: A case report. World J Gastroenterol 2013;19(14):2282-2285

• Sarcina organisms in the gastrointestinal tract: A clinicopathologic and molecular study. Am J Surg Pathol 2011;35(11):1700-1705

• Physiological Adaptations of Anerobic Bacteria to low pH:Metabolic control of proton motive force in Sarcina ventriculi. Journal of bacteriology. 1987;2150-2157.

Thank you